While the movie industry focused on awards at last night’s Golden Globes, the stars spent the weekend partying. Demi Moore and Ashton Kutcher hit the dance floor with Leonardo DiCaprio, Cameron Diaz and Alex Rodriguez at producer Mike Medavoy‘s party at Ron Burkle‘s estate Thursday. A spy told us: “Demi and Cameron were dancing up a storm . . . Things also looked romantic with Cameron and A-Rod, who were seen kissing and canoodling.” Another spy said DiCaprio, there with Bar Refaeli, took charge of the music. The source said: “He wanted some different music, so he got up in the deejay booth.” Afterward, a group including Edward Norton headed back to Demi and Ashton’s house for a card game we’re told lasted until 6 a.m. Despite the late finish, the following day A-Rod, Diaz and DiCaprio, headed to sports bar Goal to watch the Steelers/Ravens game. Over at the W party at the Chateau Marmont on Friday, Tom Cruise held court with wife Katie Holmes. Meanwhile Creative Artists Agency’s Friday-night soiree at Soho House attended by Julia Roberts and Cruise was temporarily shut down because there were so many people. On Saturday, stars including Jeff Bridges, Mark Wahlberg, Sacha Baron Cohen and Chace Crawford headed to the Chateau Marmont for the Paramount party. Microsoft co-founder Paul Allen told guests: “I am cancer-free!” He was diagnosed with non-Hodgkins lymphoma in 2009 and underwent chemo. Paramount Chairman and CEO Brad Grey told us he was delighted with his newest acquisition, Frank Sinatra’s seven-bedroom home in Holmby Hills. He said: “I will keep as much of the original features as I can, like the handmade bricks.” Meanwhile the same night, Sony Pictures Entertainment’s Amy Pascal threw a party at her home to celebrate “The Social Network,” with guests including Aaron Sorkin, Scarlett Johansson, Darren Aronofsky, Melissa Leo and Jeremy Irons.